NATURAL SCIENCES OF PHILADELPHIA. 527 



Table of Species. 



I. Fore wings black, brown or whitish. 



* Fore wings spotted, ?wt striped. 



a. Fore wings brown. 



Abdomen spotted above with black ; hind wings with 



blue black spots, Americana. 



Abdomen with disk black ; hind wings black-band- 

 ed, Parthenos. 



b. Fore wings black or blackish. 



Fore wings with a few spots, Placentia. 



" with many spots, Virginalis. 



c. Fore wings whitish or flesh-colored. 



Hind wings cinnabar red ; fore wings with large brown 



spots, C a j a . 



' ' saffron-colored, Dahurica. 



flesh-colored or pinkish, Dione. 



** Fore wings striped. Quenselii. 



Fore wings with five stripes, Virgo . 

 " with three stripes ; 



Fore wings with the apical veins pale, Virguncula. 

 " with the apical veins dark. 



Fore wings with a furcate apical stripe, N a i s 



with a crucial subtenninal stripe, Phyllira. 



Fore wings with two stripes, f e r v i d a . 



***Fore wings with a spot and a stripe. hyperborea. 



II. Fore wings fulvous or yellow, black spotted. 



Hind wings somewhat cinereous, g e 1 i d a . 



Mr. "Walker regards Caja as common to Europe and the United States, and 

 says that "the white markings in the American species sometimes overspread 

 nearly the whole surface of the wing, and in other cases they entirely disap- 

 pear. The black spots on the hind wings are almost equally variable." The 

 description below is drawn from the European species. 



Fore wings with a long, narrow costal cell. 



* A. Caja, Linn. Umber brown. Patagia tipped with red. Fore wings 

 Very pale yellowish white at the base, with four umber brown spots ; with 

 two pale yellowish white streaks on the costa over the disk and an irregular 

 crucial mark of the same hue in apical portion of the wing, consisting of a 

 band from the costa to the inner angle, where there is a small brown dot, 

 crossed by a broad line from near the tip, beneath which it is angulated, to 

 the middle of the inner margin and connected sometimes by a streak along 

 the fold with the basal patch. Hind wings red, with three spots in the mid- 

 dle of the wing, one on the discal vein ; the origin of medio-posterior and 

 middle of submedian and three along the hinder margin all dark bluish black. 

 Abdomen red, with black dorsal spots. 



California, West coast of America. 



* A. Dahurica, Boisd. Flesh-colored. Occiput with three black stripes 

 from the body and with numerous, black intercostal spots on the anterior 

 wings. Posterior wings saffron-colored, with the base and cilia yellow, spotted 

 with black. 



California. 



*A. Quenselii, Greyer. Zutr. Samm. Ex. Sch., 14, 424, f. 847, 8. 

 Female. Black. Thorax with four testaceous stripes. Abdomen with two 

 testaceous stripes. Fore wings with luteous stripes furcate and confluent 



I860.] 



